1223403666 has 8 divisors (see below), whose sum is σ = 2446807344. Its totient is φ = 407801220.

The previous prime is 1223403659. The next prime is 1223403677. The reversal of 1223403666 is 6663043221.

It is a sphenic number, since it is the product of 3 distinct primes.

1223403666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101950300 + ... + 101950311.

It is an arithmetic number, because the mean of its divisors is an integer number (305850918).

Almost surely, 2^1223403666 is an apocalyptic number.

1223403666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223403666 is a wasteful number, since it uses less digits than its factorization.

1223403666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203900616.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 1223403666 is about 34977.1877943325. The cubic root of 1223403666 is about 1069.5225010079.

Adding to 1223403666 its reverse (6663043221), we get a palindrome (7886446887).

The spelling of 1223403666 in words is "one billion, two hundred twenty-three million, four hundred three thousand, six hundred sixty-six".